Release notes for Gerrit 2.13.8

Change-Id: I772d3e9938c2083ce7f1a583fea42fedf29f8f6b

releases/2.13.md

diff --git a/releases/2.13.md b/releases/2.13.md
index ef65e43..f408e09 100644
--- a/releases/2.13.md
+++ b/releases/2.13.md
@@ -1,6 +1,7 @@
 # Gerrit 2.13
 
-Download: **[2.13.7](https://gerrit-releases.storage.googleapis.com/gerrit-2.13.7.war)**
+Download: **[2.13.8](https://gerrit-releases.storage.googleapis.com/gerrit-2.13.8.war)**
+| [2.13.7](https://gerrit-releases.storage.googleapis.com/gerrit-2.13.7.war)
 | [2.13.6](https://gerrit-releases.storage.googleapis.com/gerrit-2.13.6.war)
 | [2.13.5](https://gerrit-releases.storage.googleapis.com/gerrit-2.13.5.war)
 | [2.13.4](https://gerrit-releases.storage.googleapis.com/gerrit-2.13.4.war)
@@ -9,7 +10,8 @@
 | [2.13.1](https://gerrit-releases.storage.googleapis.com/gerrit-2.13.1.war)
 | [2.13](https://gerrit-releases.storage.googleapis.com/gerrit-2.13.war)
 
-Documentation: **[2.13.7](https://gerrit-documentation.storage.googleapis.com/Documentation/2.13.7/index.html)**
+Documentation: **[2.13.8](https://gerrit-documentation.storage.googleapis.com/Documentation/2.13.8/index.html)**
+| [2.13.7](https://gerrit-documentation.storage.googleapis.com/Documentation/2.13.7/index.html)
 | [2.13.6](https://gerrit-documentation.storage.googleapis.com/Documentation/2.13.6/index.html)
 | [2.13.5](https://gerrit-documentation.storage.googleapis.com/Documentation/2.13.5/index.html)
 | [2.13.4](https://gerrit-documentation.storage.googleapis.com/Documentation/2.13.4/index.html)
@@ -22,6 +24,7 @@
 
 ## Release Highlights
 
+* Suport for multiple database backends for "reviewed" flags (from 2.13.8)
 * Support for Large File Storage (LFS)
 * Metrics interface
 * Hooks plugin
@@ -38,6 +41,31 @@
   java -jar gerrit.war init -d site_path
 ```
 
+### Manual Schema Update for Reviewed Flags
+
+Sites that have already upgraded to version 2.13 may want to migrate from the
+default H2 database to MySQL or PostgreSQL. This can be done using the
+[MigrateAccountPatchReviewDb](http://gerrit-documentation.storage.googleapis.com/Documentation/2.13.8/pgm-MigrateAccountPatchReviewDb.html)
+program.
+
+Sites that have already upgrade to version 2.13 before 2.13.8 need to manually
+migrate the reviewed flags database to change the `file_name` column length.
+
+After stopping Gerrit, enter the H2 console:
+
+``` sh
+java -jar /path/to/h2.jar -url jdbc:h2:path/to/review_site/db/account_patch_reviews
+```
+
+and then execute the following statement:
+
+```
+ALTER TABLE account_patch_reviews ALTER COLUMN file_name VARCHAR(4096) DEFAULT '' NOT NULL
+```
+
+Depending on the number of rows, this operation may take some time. For
+example, one million rows may take up to 1 minute.
+
 ### Online Reindexing
 
 To use online reindexing for the `changes` secondary index when upgrading
@@ -464,6 +492,49 @@
 
 ## Bugfix Releases
 
+### 2.13.8 {#2.13.8}
+
+* Improvements in "reviewed" flags cache
+
+    * [Issue 5906](https://bugs.chromium.org/p/gerrit/issues/detail?id=5906):
+    Fix performance regression.
+
+    * Fix SQL statements used to clear "reviewed" flags.
+
+        The SQL statements were using `+` rather than `=` which resulted in
+        more entries than expected being deleted.
+
+    * Fix `file_name` column length.
+
+* Upgrade JGit to 4.5.2.201704071617-r.
+
+  This includes more fixes for handling of invalid packfiles. See
+  [JGit bug 514170](https://bugs.eclipse.org/bugs/show_bug.cgi?id=514170)
+  for details.
+
+* [Issue 5817](https://bugs.chromium.org/p/gerrit/issues/detail?id=5817):
+Be more consistent about object ids used in ref operation validation.
+
+  The `ReceiveCommand` passed to `RefOperationValidationListener` did not
+  always have the old and new objectd Ids set, which could result in crashes
+  when dereferenced by plugins.
+
+* Fix potential server error when extracting footer lines from commits.
+
+* Fix merging a merge commit that refers to commits not submitted as changes.
+
+* Fix redundant notifications on change screen.
+
+* Allow project owner to use set-project ssh command.
+
+  REST API and UI allow project owner to change the project settings so
+  inconsistency is fixed by allowing the same in the ssh command.
+
+* Add an `account indexed` extension point.
+
+  Similar to the existing `change indexed` extension point, this allows plugins
+  to be notified when an account has been indexed.
+
 ### 2.13.7 {#2.13.7}
 
 * Prevent circular module dependency when running in external container.